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介質(zhì)涂敷電大腔體電磁散射IPO研究

何小祥,  徐金平,  顧長青

何小祥, 徐金平, 顧長青. 介質(zhì)涂敷電大腔體電磁散射IPO研究[J]. 電子與信息學報, 2005, 27(1): 136-138.
引用本文: 何小祥, 徐金平, 顧長青. 介質(zhì)涂敷電大腔體電磁散射IPO研究[J]. 電子與信息學報, 2005, 27(1): 136-138.
He Xiao-xiang, Xu Jin-ping, Gu Chang-qing . IPO for Analysis of EM Scattering by Dielectric Coated Electrically Large Cavities[J]. Journal of Electronics & Information Technology, 2005, 27(1): 136-138.
Citation: He Xiao-xiang, Xu Jin-ping, Gu Chang-qing . IPO for Analysis of EM Scattering by Dielectric Coated Electrically Large Cavities[J]. Journal of Electronics & Information Technology, 2005, 27(1): 136-138.

介質(zhì)涂敷電大腔體電磁散射IPO研究

IPO for Analysis of EM Scattering by Dielectric Coated Electrically Large Cavities

  • 摘要: 將迭代物理光學法(IPO)推廣應用于研究具有非完純導電邊界的電磁散射問題,建立了相應的理論模型,并應用到內(nèi)壁涂敷介質(zhì)的電大尺寸腔體的電磁散射特性分析中。在每一次IPO迭代步驟中,應用Fresnel反射系數(shù)計算出介質(zhì)表面總場。通過多次迭代,求出腔體內(nèi)壁上穩(wěn)定的電磁場分布,進而計算出腔體的電磁散射特性。數(shù)值結果表明了這種擴展的IPO方法的在分析電大尺寸介質(zhì)涂敷目標中的正確性和高效性。
    Abstract: A theoretical model of Iterative Physical Optics (IPO) is established for the ElectroMagnetic (EM) scattering problem with imperfectly conducting boundaiy and applied to the analysis of EM scattering by a dielectric coated electrically large cavity. In each IPO iteration step, the total field on the dielectric surface is computed utilizing the Fresnel reflection coefficient. By employing iteration process, the EM field distribution on the inner wall of the cavity is predicted and then the scattering fields of the cavity are obtained. Numerical results demonstrate that the improved IPO algorithm is correct and effective for the analysis of dielectric coated electrically large targets.
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  • 王樹民,李明之,王長清.GRE-FDTD混合法對二維矩形終端任意形狀進氣道RCS的計算.電子學報,2000,28(6):138-141.[2]Robert Lee, Tsc-Tong Chia. Analysis of electromagnetic scattering from a cavity with a complex termination by means of a hybrid ray-FDTD method. IEEE Trans. on AP, 1993, AP-1 (11): 1560 - 1569.[3]Tsc-Tong Chia, Robert J. Burkholder, Robert Lee. The application of FDTD in hybrid methods for cavity scattering analysis. IEEE Trans. on AP, 1995, AP-43(10): 1082 - 1089.[4]何小祥,徐金平,顧長青.電大尺寸復雜結構腔體電磁散射的IPO/FEM混合法研究[J].電子與信息學報.2003,25(2):247-253瀏覽[5]顧長青,王璟.IPO-FDTD混合法計算三維復雜腔體的RCS.電波科學學報,2003,1 8(4):385-388.[6]Ling Hao, Lee Shung-wu, Chou Ri-chee. High frequency RCS of open cavities with rectangular and circular cross section. IEEE Trans. on AP, 1989, AP-37(5): 648 - 654.[7]Obelleiro F, Rodriguez J L, Burkholder R J. An iterative physical optics approach for analyzing the electromagnetic scattering by large open-ended cavities. IEEE Trans. on AP, 1995, AP-43(4):356 - 361.[8]顧長青,舒永澤,徐金平.物理光學迭代法的子域連接法.電子學報,2001,29(3):420-422.[9]Klement D, Preeissner J, Stein V. Special problems in applying the physical optics method for backscatter computations of complicated objects. IEEE Trans. on AP, 1988, AP-36(2): 228 -273.
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出版歷程
  • 收稿日期:  2003-08-28
  • 修回日期:  2004-01-12
  • 刊出日期:  2005-01-19

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